As pointed out by Tobias Schlitt, the full collection of slides from the PHPWeekender have been posted to the event's website.

To grab them, head to the main site and scroll all the way down to the schedule at the bottom. Each of the talks that have slides are linked to the archive with them cmpressed inside. Some great topics were presented that weekend, including a look at XML handing in PHP, shell scripting, best practices, and object-oriented programming.